Project Euler (PE)

About

This page collects my personal solutions for various problems from Project Euler. Each problem may appear in multiple programming languages and is gradually explained in more detail as I revisit it.

Problem List

• Problem 1 – Multiples of 3 and 5
• Problem 2 – Even Fibonacci Numbers
• Problem 3 – Largest Prime Factor
• Problem 4 – Largest Palindrome Product
• Problem 5 – Smallest Multiple
• Problem 6 - Sum Square Difference
• Problem 7 - 10001st Prime
• Problem 8 - Largest Product in a Series
• Problem 9 - Special Pythagorean Triplet
• Problem 10 - Summation of Primes
• Problem 11 - Largest Product in a Grid
• Problem 12 - Highly Divisible Triangular Number
• Problem 13 - Large Sum
• Problem 14 - Longest Collatz Sequence
• Problem 15 - Lattice Paths
• Problem 16 - Power Digit Sum
• Problem 17 - Number Letter Counts
• Problem 18 - Maximum Path Sum I
• Problem 19 - Counting Sundays
• Problem 20 - Factorial Digit Sum
• Problem 21 - Amicable Numbers
• Problem 22 - Names Scores
• Problem 23 - Non-Abundant Sums
• Problem 24 - Lexicographic Permutations
• Problem 25 - 1000-digit Fibonacci Number
• Problem 26 - Reciprocal Cycles
• Problem 27 - Quadratic Primes
• Problem 28 - Number Spiral Diagonals
• Problem 29 - Distinct Powers
• Problem 30 - Digit Fifth Powers
• Problem 31 - Coin Sums

Repository

All code used on these pages lives in this repository.